/**
 * ============================================
 * GESTREB ULTIMATE DESIGN SYSTEM
 * Touch Personnelle - Simple, Fluide & Puissant
 * ============================================
 */

/* ============================================
   VARIABLES AVANCÉES
   ============================================ */
:root {
  /* Palette Sophistiquée - Verts Profonds */
  --forest-deep: #0f4c3a;
  --forest-primary: #16a34a;
  --forest-light: #22c55e;
  --forest-glow: #86efac;
  --forest-mist: rgba(22, 163, 74, 0.05);
  
  /* Accents Élégants */
  --sky-blue: #0ea5e9;
  --ocean-deep: #0284c7;
  --sunset-orange: #f59e0b;
  --ruby-red: #dc2626;
  --amethyst: #a855f7;
  
  /* Tons Naturels */
  --earth-white: #fefefe;
  --cloud-50: #fafafa;
  --cloud-100: #f5f5f5;
  --stone-200: #e7e5e4;
  --stone-400: #a8a29e;
  --slate-600: #475569;
  --charcoal: #1e293b;
  --midnight: #0f172a;
  
  /* Ombres Naturelles */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-soft: 0 2px 8px -2px rgba(15, 76, 58, 0.08), 0 4px 12px -2px rgba(15, 76, 58, 0.04);
  --shadow-medium: 0 4px 16px -4px rgba(15, 76, 58, 0.12), 0 8px 24px -4px rgba(15, 76, 58, 0.08);
  --shadow-large: 0 8px 32px -8px rgba(15, 76, 58, 0.16), 0 12px 48px -8px rgba(15, 76, 58, 0.12);
  --shadow-glow: 0 0 24px rgba(22, 163, 74, 0.2), 0 0 48px rgba(22, 163, 74, 0.1);
  
  /* Espacements (8pt Grid) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  
  /* Rayon Organiques */
  --radius-xs: 0.25rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-organic: 1rem 1.5rem 1rem 1.5rem;
  
  /* Transitions Naturelles */
  --ease-natural: cubic-bezier(0.4, 0.0, 0.2, 1);
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-bounce: cubic-bezier(0.87, 0, 0.13, 1);
  
  /* Durées */
  --duration-instant: 150ms;
  --duration-fast: 250ms;
  --duration-normal: 350ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;
  
  /* Typographie Élégante */
  --font-primary: 'Montserrat', -apple-system, system-ui, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 800;
  
  /* Lignes de hauteur */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
}

/* ============================================
   RESET AVANCÉ
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-normal);
  color: var(--charcoal);
  background: linear-gradient(135deg, 
    var(--cloud-50) 0%, 
    rgba(240, 253, 244, 0.3) 50%, 
    var(--cloud-50) 100%);
  overflow-x: hidden;
}

/* ============================================
   SYSTÈME DE GRILLE FLUIDE
   ============================================ */
.container-fluid {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ============================================
   TYPOGRAPHIE ÉLÉGANTE
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  color: var(--midnight);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: var(--font-weight-black);
  background: linear-gradient(135deg, var(--forest-deep) 0%, var(--forest-primary) 50%, var(--sky-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 12px rgba(22, 163, 74, 0.1);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: var(--forest-deep);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  color: var(--slate-600);
}

p {
  line-height: var(--leading-relaxed);
  color: var(--slate-600);
}

/* ============================================
   BOUTONS ULTRA-MODERNES
   ============================================ */
.btn-ultimate {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: var(--font-weight-semibold);
  font-size: 0.9375rem;
  line-height: 1;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-natural);
  overflow: hidden;
  z-index: 1;
  will-change: transform;
  -webkit-tap-highlight-color: transparent;
}

.btn-ultimate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-natural);
  z-index: -1;
}

.btn-ultimate:hover::before {
  opacity: 1;
}

.btn-ultimate::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.4), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-natural);
}

.btn-ultimate:hover::after {
  opacity: 1;
}

.btn-ultimate:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: var(--shadow-large), var(--shadow-glow);
}

.btn-ultimate:active {
  transform: translateY(0) scale(0.98);
}

/* Variantes */
.btn-primary-ultimate {
  background: linear-gradient(135deg, var(--forest-primary) 0%, var(--forest-deep) 100%);
  color: white;
  box-shadow: var(--shadow-soft);
}

.btn-primary-ultimate:hover {
  background: linear-gradient(135deg, var(--forest-deep) 0%, var(--forest-primary) 100%);
}

.btn-secondary-ultimate {
  background: linear-gradient(135deg, var(--sky-blue) 0%, var(--ocean-deep) 100%);
  color: white;
  box-shadow: var(--shadow-soft);
}

.btn-glass-ultimate {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: var(--forest-deep);
  box-shadow: var(--shadow-soft);
}

/* Effet Ripple */
.btn-ultimate {
  overflow: hidden;
}

.btn-ultimate .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple-effect 600ms var(--ease-natural);
  pointer-events: none;
}

@keyframes ripple-effect {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ============================================
   CARDS ÉLÉGANTES AVEC DEPTH
   ============================================ */
.card-ultimate {
  position: relative;
  background: var(--earth-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--stone-200);
  transition: all var(--duration-normal) var(--ease-natural);
  overflow: hidden;
  will-change: transform;
}

.card-ultimate::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--forest-primary), var(--sky-blue), var(--amethyst));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-natural);
}

.card-ultimate:hover {
  transform: translateY(-8px) rotateX(2deg);
  box-shadow: var(--shadow-large);
  border-color: var(--forest-light);
}

.card-ultimate:hover::before {
  opacity: 1;
}

/* Card Glass Effect */
.card-glass-ultimate {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-medium);
}

/* ============================================
   INPUTS SOPHISTIQUÉS
   ============================================ */
.input-ultimate {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: 0.9375rem;
  font-family: var(--font-primary);
  font-weight: var(--font-weight-medium);
  color: var(--charcoal);
  background: var(--earth-white);
  border: 2px solid var(--stone-200);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-natural);
  outline: none;
}

.input-ultimate::placeholder {
  color: var(--stone-400);
  font-weight: var(--font-weight-normal);
}

.input-ultimate:focus {
  border-color: var(--forest-primary);
  background: white;
  box-shadow: 0 0 0 4px var(--forest-mist), var(--shadow-soft);
  transform: translateY(-1px);
}

.input-ultimate:hover:not(:focus) {
  border-color: var(--forest-light);
}

/* Input avec icône */
.input-group-ultimate {
  position: relative;
}

.input-group-ultimate .input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--stone-400);
  pointer-events: none;
  transition: color var(--duration-fast) var(--ease-natural);
}

.input-group-ultimate .input-ultimate {
  padding-left: var(--space-12);
}

.input-group-ultimate .input-ultimate:focus + .input-icon {
  color: var(--forest-primary);
}

/* ============================================
   NAVIGATION FLUIDE
   ============================================ */
.nav-ultimate {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--stone-200);
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-natural);
}

.nav-ultimate.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-medium);
}

.nav-link-ultimate {
  position: relative;
  padding: var(--space-3) var(--space-4);
  font-weight: var(--font-weight-medium);
  color: var(--slate-600);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-natural);
}

.nav-link-ultimate::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--forest-primary), var(--sky-blue));
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
  transition: all var(--duration-normal) var(--ease-spring);
  transform: translateX(-50%);
}

.nav-link-ultimate:hover {
  color: var(--forest-primary);
  background: var(--forest-mist);
}

.nav-link-ultimate:hover::after {
  width: 100%;
}

.nav-link-ultimate.active {
  color: var(--forest-deep);
  background: var(--forest-mist);
}

.nav-link-ultimate.active::after {
  width: 100%;
}

/* ============================================
   SIDEBAR ÉLÉGANTE
   ============================================ */
.sidebar-ultimate {
  background: linear-gradient(180deg, var(--earth-white) 0%, var(--cloud-50) 100%);
  border-right: 1px solid var(--stone-200);
  box-shadow: var(--shadow-medium);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--forest-light) transparent;
}

.sidebar-item-ultimate {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-1) var(--space-3);
  font-weight: var(--font-weight-medium);
  color: var(--slate-600);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-natural);
  overflow: hidden;
}

.sidebar-item-ultimate::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--forest-primary), var(--sky-blue));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-spring);
}

.sidebar-item-ultimate:hover {
  background: var(--forest-mist);
  color: var(--forest-deep);
  transform: translateX(4px);
  padding-left: var(--space-5);
}

.sidebar-item-ultimate:hover::before {
  transform: scaleX(1);
}

.sidebar-item-ultimate.active {
  background: linear-gradient(135deg, var(--forest-mist) 0%, rgba(14, 165, 233, 0.05) 100%);
  color: var(--forest-deep);
  font-weight: var(--font-weight-semibold);
}

.sidebar-item-ultimate.active::before {
  transform: scaleX(1);
}

.sidebar-item-ultimate svg,
.sidebar-item-ultimate .material-icons-outlined {
  transition: all var(--duration-fast) var(--ease-natural);
  will-change: transform;
}

.sidebar-item-ultimate:hover svg,
.sidebar-item-ultimate:hover .material-icons-outlined {
  transform: scale(1.1) rotate(-5deg);
}

/* ============================================
   TABLES MODERNES
   ============================================ */
.table-ultimate {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--earth-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.table-ultimate thead {
  background: linear-gradient(135deg, var(--forest-deep) 0%, var(--forest-primary) 100%);
  color: white;
}

.table-ultimate th {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-ultimate td {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--stone-200);
  font-size: 0.9375rem;
  color: var(--slate-600);
}

.table-ultimate tbody tr {
  transition: all var(--duration-fast) var(--ease-natural);
}

.table-ultimate tbody tr:hover {
  background: var(--forest-mist);
  transform: scale(1.01);
  box-shadow: 0 2px 8px rgba(15, 76, 58, 0.05);
}

.table-ultimate tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   MODALS ÉLÉGANTES
   ============================================ */
.modal-ultimate-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9998;
  animation: fadeIn var(--duration-normal) var(--ease-natural);
}

.modal-ultimate {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--earth-white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-large);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  z-index: 9999;
  animation: modalSlideUp var(--duration-normal) var(--ease-spring);
}

@keyframes modalSlideUp {
  from {
    opacity: 0;
    transform: translate(-50%, -45%);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%);
  }
}

/* ============================================
   LOADING STATES ÉLÉGANTS
   ============================================ */
.skeleton-ultimate {
  background: linear-gradient(
    90deg,
    var(--cloud-100) 0%,
    var(--stone-200) 50%,
    var(--cloud-100) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.spinner-ultimate {
  width: 40px;
  height: 40px;
  border: 3px solid var(--forest-mist);
  border-top-color: var(--forest-primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   SCROLLBAR PERSONNALISÉE
   ============================================ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--cloud-100);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--forest-light), var(--forest-primary));
  border-radius: var(--radius-lg);
  border: 2px solid var(--cloud-100);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--forest-primary), var(--forest-deep));
}

/* ============================================
   ANIMATIONS AVANCÉES
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(22, 163, 74, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(22, 163, 74, 0.4);
  }
}

/* Classes utilitaires */
.animate-fade-in {
  animation: fadeIn var(--duration-normal) var(--ease-natural);
}

.animate-slide-up {
  animation: slideInUp var(--duration-normal) var(--ease-natural);
}

.animate-slide-right {
  animation: slideInRight var(--duration-normal) var(--ease-natural);
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  :root {
    --space-8: 1.5rem;
    --space-10: 2rem;
    --space-12: 2.5rem;
  }
  
  .card-ultimate {
    padding: var(--space-4);
  }
  
  .btn-ultimate {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   ACCESSIBILITÉ
   ============================================ */
*:focus-visible {
  outline: 3px solid var(--forest-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  body {
    background: white;
  }
  
  .sidebar-ultimate,
  .nav-ultimate,
  .btn-ultimate {
    display: none;
  }
}